Go down and check coupons out. Remember to check price history if it is available. Do you want to know what the best price is?
Power: 0.5-3W, Power Supply: USB, Model: TCM3U, Waterproof: IPX6, Product Style: Overclocking Pro, Product Name: UAlANS Ultrasonic Scaler Pro, Output Voltage: 5V, Vibration Frequency: 26-42KHZ
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($26.55): BGDEUA02
2. ($26.87): BG0a2c0a
3. ($27.19): BG75597c
4. ($29.43): BG8ReviTrage
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHOM038, BG4ee866, BGf65121, BG48602a, Cuponation9, BG001de9, 1281888416, BG914ba0, BG112b78, BG565371, BGb72266, BG5d8ed2, BGf025b1, BG369cff, BGcf27d3, BGf896f6, BGa1f02d, BG589b2e, BGdc0322c, BGgh0601b
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – UALANS Dental Scaler [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for UALANS Dental Scaler.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).